Caspofungin Impurity 12

NA

(2S,4R)-N-((2S,3S,4S)-1-(((2S,3R)-5-Amino-1-((2S,3S)-2-carbamoyl-3-hydroxypyrrolidin-1-yl)-3-hydroxy-1-oxopentan-2-yl)amino)-3,4-dihydroxy-4-(4-hydroxyphenyl)-1-oxobutan-2-yl)-1-(((S,3Z,5E)-5-((2-(((2R,6S,9S,11R,12S,14aS,15S,20S,23S,25aS)-20-((R)-3-amino-1-hydroxypropyl)-23-((1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl)-9-((10R,12S)-10,12-dimethyltetradecanamido)-2,11,15-trihydroxy-6-((R)-1-hydroxyethyl)-5,8,14,19,22,25-hexaoxotetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-12-yl)amino)ethyl)imino)-2-((10R,12S)-10,12-dimethyltetradecanamido)pent-3-enoyl)-D-allothreonyl)-4-hydroxypyrrolidine-2-carboxamide;